AUTHOR'S NOTES

This certainly is not my first ever crossover story. But this is my first ever Mario fanfiction. However, this is a short story inspired by the stories of a few games from the Super Mario and Fire Emblem series. With Mario being kidnapped like in Luigi's Mansion to the transformation of Rhea into The Immaculate One like in Fire Emblem: Three Houses, everything you could possibly want out of a good inspirational fanfiction is in here.

I do not own the characters from the Super Mario Bros. franchise or the Fire Emblem franchise. All rights go to their respectful owners. Enjoy the story!


Spirits of a Black Night

A Mario X Fire Emblem Story

Chapter 1

It was a peaceful and beautiful morning in the Mushroom Kingdom. Mario and Luigi were about to go on a huge adventure through the kingdom's mushroom-filled plains to stomp on goombas and koopas, and maybe collect a few coins or two. However, little did they know that a bigger threat was coming to the kingdom. Bowser, the King of the Koopas and Mario's arch-nemesis, was in the middle of working on a monster summoner in a haunted house in the Haunted Forest outside the Mushroom Kingdom. With that summoner, he was to summon monsters from the Outrealms to capture Princess Peach of the Mushroom Kingdom and make the dinosaur species of Yoshis go endangered. However, when the news hit Mario's ears, he knew he and Luigi would have to do something.


One day, Mario received a letter from that same haunted house that Bowser was at. However, the letter was not from Bowser. It was from a strange ghostly being that was working for Bowser. And then, when Mario opened the letter, A ghost appeared. Thinking it was the ghost that Bowser hired, Mario was appalled. Then, Mario disappeared into thin air along with Princess Peach and Toad. The only one who did not disappear was Luigi, who was back at his house.

When Luigi got to the Mushroom Kingdom's Imperial Palace, he was shocked that Mario, Peach, and Toad were gone. All he saw was Peach's retainer, Toadsworth, a grandfatherly Toad who overlooked all of the Mushroom Kingdom's royal activities.

Said Toadsworth to Luigi, "Luigi, I have some terrible news. Princess Peach, your brother Mario, and Toad have gone missing. I suspect that they are at some sort of haunted house, but it is unclear where they are. Please rescue them and bring them back."

Luigi responded to Toadsworth. "I will do so." Luigi said.


Back with Bowser and his assistant, a green shelled Koopa Troopa named Trooper, they kept Mario, Peach, and Toad locked in cages. Bowser laughed in an evil way, and he asked Mario a question.

"Mario, now what are you going to do to stop me?" Bowser asked Mario

"I will get out of this cage, and I will headbutt you like a goat!" Mario yelled.

"You think so, eh?" Bowser asked. "Alright. We will see about that." As Bowser l;aughed evilly again, Toad screamed.

"Luigi… please save us…" Peach said in a worried voice. Hoping that Luigi would come to the rescue, everyone prayed for Luigi to be brave out in the wild and spooky forests. However, Bowser had plans to stop Luigi. He would release spirits, ghosts, demonic beasts, feral laguz, and other monsters into the forest to attempt to stop Luigi from getting to the haunted house.


Back with Luigi, meanwhile, he was packing up his survival materials and writing two sets of letters One was going to go to Garreg Mach Monastery's Church of Seiros in Fódlan. The other letter was going to go to the Crimean countryside in Tellius, where a ragtag group called the Greil Mercenaries resided. When the two places received the letters, they knew that they had to send people out to help Luigi with his adventure.

At Garreg Mach Monastery in Fódlan, Archbishop Rhea, a mint-green haired woman who oversaw the church and teachings of Saint Seiros, was in charge of her own personal army. However, she decided that she would take Seteth, her advisor, with her. Seteth's sister Flayn also joined the cause, but she was under a condition. She had to be protected by a set of people who would be accompanying the archbishop. Those people were the renowned Knights of Seiros, led by Captain Jeralt Reus Eisner, the father of an Officers Academy professor named Byleth. Because Jeralt was going to help Luigi on the quest he was going on, Byleth had to attend the mission too.


Back in Tellius' Crimean countryside where the Greil Mercenaries resided, Greil, the commander of the company, decided to take his son Ike, his daughter Mist, the deputy commander Titania, and the tactician Soren. The rest of them, meanwhile, would stay at the fort, protecting it from bandits and other intruders.

Greil asked his troops, "Is everyone ready to depart for the Mushroom Kingdom?"

"It looks like everyone is ready for the big departure, Commander Greil." Titania said.

"Great, Titania." Greil said with a thumbs up. "Thanks for your help."


It was past three hours. Luigi was getting bored. Then, he heard a knock at the door. Shockingly, the first troop to arrive was Archbishop Rhea and the staff of the Church of Seiros. This was because they were the first ones to receive Luigi's letter about the kidnapping of his friends and brother.

"So, you say you needed help on your quest, Luigi?" Rhea asked.

"I sure did, Lady Rhea." Luigi said. "Oh, I hope Mario is okay."

"Calm down, Luigi. We'll help you." Captain Jeralt said.

"Thanks, everyone." Luigi said. Suddenly, the Greil Mercenaries were the next ones to barge into the castle.

"Luigi, Luigi… no need to back up from us." Greil said as Luigi took a few steps backwards.

"I am assuming you are the ragtag Greil Mercenaries of the Crimean countryside of Tellius?" Luigi asked.

"We are." Greil's son Ike said. "We heard about Mario's capture, and we can help you on your quest to get him back here to your home of the Mushroom Kingdom."

"Ike is right, Luigi." Titania said. "We are able to help you out with your adventure." Suddenly, Toadsworth came into the room.

"Are you the guests who are going to help Luigi with this challenging adventure?" Toadsworth asked.

"We are." Greil said. "My mercenary company from Crimea's countryside were the second set of people to hear of this news. The first people were the staff members of the Church of Seiros. And, by what I saw when I walked in, Lady Rhea was the leader of the faculty army."

"I in fact am the supreme ruler of this faculty army." Rhea said. "And I suppose you are the advisor to the royalty of this kingdom?" Rhea asked Toadsworth.

"I am indeed the advisor to Princess Peach and the rest of the royalty of the Mushroom Kingdom, Archbishop Rhea." Toadsworth said. "I am very pleased that you are going to help Luigi go into the Haunted Forest of the Mushroom Kingdom to retrieve Mario, Toad, and the princess back."

"Shall we be given instructions on what to do?" Titania asked.

"Well, I guess it doesn't hurt to give out important instructions." Toadsworth said. "Alright. Here's what you need to do. You have to go past those trees on the second mountain in the distance. That mountain is Spooks Peak. It is one of the most dangerous mountains in the entire world, full of feral laguz, demonic beasts, boos, bats, and more creepy beings that go bump in the night." Toadsworth later explained.

"It doesn't seem so bad to us…" Greil said.

"It's that bad, Greil." Toadsworth said. "In fact, your real problem is the monsters Bowser is releasing into the forest."

"What monsters are these?" Soren asked.

"These monsters are unknown at the moment, but if I find out more information about these monsters, I will be sure to tell you guys by sending out a messenger." Toadsworth said.

"And how do you plan to do that?" Jeralt asked Toadsworth. "Advanced technology? Because the Church of Seiros doesn't have any of that stuff."

"Captain Jeralt, I am going to give Luigi this 3DS that has a built-in communication feature in it." Toadsworth said.

"Who invented this thing?" Luigi asked.

"One of the Mushroom Kingdom's science professors invented this little device, Luigi." Toadsworth explained. "I must tell you something else, too. Use it wisely."

"Yes, Toadsworth." Luigi responded. As Luigi took the device off Toadsworth's hands, he set out on his big adventure to the Haunted Forest with the Church of Seiros and the Greil Mercenaries.


Back at Bowser's castle, he was thinking of ways to have Mario, Toad, and Peach fight against Luigi and his team. With Trooper by his side, the two were thinking of ways that this could be possible. When Peach heard about these plans from Bowser and Trooper, she screamed. Mario and Toad prayed that Luigi would use all his bravery to come and rescue them. But it was back with Luigi and his team that a true adventure would emerge for every hero.